Is what you offer something like Bitrated, Bitcoin Trust - multi-signature smart contracts for buyer protection and fraud prevention for Bitcoin[1]
Thanks for your information.
Bitrated provided service, reputation score, is part of BitSoul. But it seems Bitrated's reputation score is more centralized. BitSoul stores reputation on the BitCoin chain, and it can calculate scores from Decentralized Social Network(DSN) built on the BitCoin chain.